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Iffy Books | 404 S. 20th St., PHL

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33 events found.

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  • July 2025
  • Thu 24
    Top-down photo of an FM transmitter circuit on a printed circuit board, with a capsule microphone and audio input jack on the left side
    July 24 @ 1:00 pm - 4:00 pm 📻 FM Transmitter Soldering Class

    📻 FM Transmitter Soldering Class

    Iffy Books 404 S. 20th St., Philadelphia, United States

    Come out and get some soldering practice! This time we're assembling a short-range FM transmitter kit with a built-in mic and a 1/8" audio input jack. This project is recommended […]

  • Fri 25
    Flyer with a cross-section of earth with sprouts and roots on top and a large smiling worm underground making a 4. The text reads Iffy Books 4th Birthday Party Fri, July 25 6-10 PM 404 S. 20th St., PHL
    July 25 @ 6:00 pm - 10:00 pm

    🎂 Iffy Books 4th Birthday Party!

    Iffy Books 404 S. 20th St., Philadelphia, United States

    This Friday we’re hosting a 4th birthday party at Iffy Books! Stop by on 7/25 from 6–10 p.m. for drinks, snacks, and general fun. We’ll have cake at 8. Hope […]

  • Sun 27
    Flyer with the following text: Big Summer Book Sale STOP BY Icebox Project Space Sunday, July 27, 2025 11AM-5PM Bookstores Independent Publishers Artist Collectives & Printworkers 30 Vendors Hot Dogs Cash Bar
    July 27 @ 11:00 am - 5:00 pm

    🌞📚 Big Summer Book Sale at Icebox Project Space

    Icebox Project Space at Crane Arts 1400 N American St., Philadelphia, PA, United States

    See y'all at Icebox Project Space (1400 N American St.) for the Big Summer Book Sale 2025! We'll be there all day, from 11 a.m. to 5 p.m. Thanks to […]

  • Tue 29
    Flyer with a green background and the following text: The Writing Room @ Iffy Books / Every Tuesday 5-7:30 PM / Come co-work with other writers in three 4-minute units of silent writing. Writers and projects of any type welcome. 10-minute breaks and accountability check-ins between units. BYO coffee, water, computer chargers, notepads, etc.
    July 29 @ 5:00 pm - 7:30 pm ✏️ The Writing Room

    ✏️ The Writing Room

    Iffy Books 404 S. 20th St., Philadelphia, United States

    Come co-work with other writers in three 40-minute units of silent writing. Writers and projects of any type welcome. 10-minute breaks and accountability check-ins between units. BYO coffee, water, computer […]

  • Wed 30
    An artist's rendering of a black hole, with a large patch of bright white light on the right side and a dimmer area of light on the left.
    July 30 @ 7:00 pm - 8:30 pm 🪐 Speculative Futures Reading Group

    🪐 Speculative Futures Reading Group

    Iffy Books 404 S. 20th St., Philadelphia, United States

    The Speculative Futures Reading Group meets on the last Wednesday of every month at 7 p.m.!

  • August 2025
  • Fri 1
    ESP32 microcontroller development board with a pink-blue circular gradient in the background
    August 1 @ 11:15 am - 12:30 pm 🛜 ESP32 Captive Portal Workshop

    🛜 E̶S̶P̶3̶2̶ ̶C̶a̶p̶t̶i̶v̶e̶ ̶P̶o̶r̶t̶a̶l̶ ̶W̶o̶r̶k̶s̶h̶o̶p̶

    Iffy Books 404 S. 20th St., Philadelphia, United States

    We’re back to the drawing board on this project. Sorry about that. We’ll run it again sometime soon!

  • Fri 1
    The words "Philly 2600" in an old-school digital font
    August 1 @ 6:00 pm - 8:00 pm 💻 Philly 2600 Meetup

    💻 Philly 2600 Meetup

    Iffy Books 404 S. 20th St., Philadelphia, United States

    > The Philly 2600 meeting is a monthly gathering of local hackers, phreaks, nerds, geeks, activists, tinkerers, developers, infosec professionals, and other interesting people.

  • Sat 2
    The Meshtastic logo, with the word "Meshtastic" in black
    August 2 @ 10:30 am - 12:00 pm 📡 Meshtastic 101

    📡 Meshtastic 101

    Iffy Books 404 S. 20th St., Philadelphia, United States

    Join us for an introduction to Meshtastic, an application that lets you send private text messages over the air using pocket-sized LoRa radio transceivers. We’ll show you how to flash the […]

  • Sun 3
    '80s style pink glowing text reading "Homebrew Website Club" with a purple triangle and rainbow and grid receding into the background
    August 3 @ 6:00 pm - 8:00 pm 🏠 IndieWeb Homebrew Website Club

    🏠 IndieWeb Homebrew Website Club

    Iffy Books 404 S. 20th St., Philadelphia, United States

    Homebrew Website Club is a growing world-wide network of meetups for everyone who wants to take back their web experience from social media silos, and own their online identities & […]

  • Tue 5
    Flyer with a green background and the following text: The Writing Room @ Iffy Books / Every Tuesday 5-7:30 PM / Come co-work with other writers in three 4-minute units of silent writing. Writers and projects of any type welcome. 10-minute breaks and accountability check-ins between units. BYO coffee, water, computer chargers, notepads, etc.
    August 5 @ 5:00 pm - 7:30 pm ✏️ The Writing Room

    ✏️ The Writing Room

    Iffy Books 404 S. 20th St., Philadelphia, United States

    Come co-work with other writers in three 40-minute units of silent writing. Writers and projects of any type welcome. 10-minute breaks and accountability check-ins between units. BYO coffee, water, computer […]

  • Thu 7
    Painting of workers and enormous machines in a Detroit auto plant, painted by Diego Rivera
    August 7 @ 7:00 pm - 9:00 pm 📚 Capital Reading Group

    📚 Capital Reading Group

    Iffy Books 404 S. 20th St., Philadelphia, United States

    Join us for a discussion on Marx's Capital by. We'll post the sections we're covering before each meeting. We're reading Paul Reitter's recent translation (Princeton University Press, 2024).

  • Sat 9
    A drawing of two smiling turtles facing each other, with a wi-fi symbol over their heads. One is wearing a cowboy hat and the other is wearing a little bowler. Both turtles have computers on their backs. The text "Model Internet Club" is at the bottom in a typewriter font.
    August 9 @ 10:30 am - 12:30 pm 🚂 Model Internet Club

    🚂 Model Internet Club

    Iffy Books 404 S. 20th St., Philadelphia, United States

    The Model Internet Club is back! Join us every third Saturday from 10:30 a.m. to 12:30 p.m. for an informal meetup focused on building small-scale computer networks. No registration needed […]

  • Tue 12
    Flyer with a green background and the following text: The Writing Room @ Iffy Books / Every Tuesday 5-7:30 PM / Come co-work with other writers in three 4-minute units of silent writing. Writers and projects of any type welcome. 10-minute breaks and accountability check-ins between units. BYO coffee, water, computer chargers, notepads, etc.
    August 12 @ 5:00 pm - 7:30 pm ✏️ The Writing Room

    ✏️ The Writing Room

    Iffy Books 404 S. 20th St., Philadelphia, United States

    Come co-work with other writers in three 40-minute units of silent writing. Writers and projects of any type welcome. 10-minute breaks and accountability check-ins between units. BYO coffee, water, computer […]

  • Wed 13
    Cover of the book 'Empire of AI: Dreams and Nightmares in Sam Altman's OpenAI' by Karen Hao, with a blue-red gradient background
    August 13 @ 6:30 pm - 8:30 pm ⚙️ Neo-Luddite Reading Group

    ⚙️ Neo-Luddite Reading Group: ‘Empire of AI’ by Karen Hao

    Iffy Books 404 S. 20th St., Philadelphia, United States

    ➡️ Virtual Meetup Link Discord: Email neoluddite@victorgom.es for an invite! Full schedule: victorgom.es/neoluddite If you're joining for the first time, I'd suggest you read this before anything else for brief […]

  • Thu 14
    August 14 @ 2:30 pm - 4:30 pm 🎲 Pico Game Timer & Dice Workshop

    🎲 Pico Game Timer & Dice Workshop

    Iffy Books 404 S. 20th St., Philadelphia, United States

    11Learn to make a programmable game timer and dice with a Pi Pico microcontroller! First you'll solder six LEDs, two switches, and a vibration motor to the board's GPIO pins. […]

  • Fri 15
    Zine cover for "Build a Solar-Powered Music Synth," with the Iffy Books logo in the lower left corner. In the middle of the page there's a black-and-white drawing of cute hamsters assembling electronic components on a breadboard. A spiral sun is overhead, with a curving arrow pointing at a pair of music notes.
    August 15 @ 12:00 pm - 1:00 pm ☀️ Solar Music Synth Workshop

    ☀️ Solar Music Synth Workshop

    Iffy Books 404 S. 20th St., Philadelphia, United States

    Join us and build a tiny solar-powered square wave generator on a breadboard. No soldering required! The workshop is free to attend, but you'll need to purchase a kit for […]

  • Fri 15
    Animated GIF of a small circuit board with two blinking LED lights, two transistors, two capacitors, and four resistors
    August 15 @ 1:15 pm - 2:15 pm ⚡️ Beginner Soldering: Flashing LED Circuit

    ⚡️ Beginner Soldering: Flashing LED Circuit

    Iffy Books 404 S. 20th St., Philadelphia, United States

    In this workshop you'll learn the basics of soldering by building a tiny oscillator circuit with two transistors and two LED lights. No previous experience needed! Register:  

  • Sat 16
    Flyer with the Iffy Books Logo, an Ethernet port, an antenna icon, a USB logo, a VGA port, a pile of books, the SCSI icon, a cassette tape, an audio waveform, and the following text: Yard Sale Day Sat, August 16th 10 AM – 5:30 PM 404 S. 20th St., PHL
    August 16 @ 10:00 am - 5:30 pm

    🪧 Yard Sale Day

    Iffy Books 404 S. 20th St., Philadelphia, United States

    On Saturday, August 16th we'll be selling some of the computers, network switches, cables, and random odds and ends that have accumulated in our basement. You may want to show […]

  • Tue 19
    Flyer with a green background and the following text: The Writing Room @ Iffy Books / Every Tuesday 5-7:30 PM / Come co-work with other writers in three 4-minute units of silent writing. Writers and projects of any type welcome. 10-minute breaks and accountability check-ins between units. BYO coffee, water, computer chargers, notepads, etc.
    August 19 @ 5:00 pm - 7:30 pm ✏️ The Writing Room

    ✏️ The Writing Room

    Iffy Books 404 S. 20th St., Philadelphia, United States

    Come co-work with other writers in three 40-minute units of silent writing. Writers and projects of any type welcome. 10-minute breaks and accountability check-ins between units. BYO coffee, water, computer […]

  • Wed 20
    Book cover for 'The Mission: The CIA in the 21st Century' by Tim Weiner (2025). Blue background, white text, smudged gold seal with an eagle reading "Intelligence Agency"
    August 20 @ 7:00 pm - 8:30 pm 👁️ Intelligence History Reading Group: ‘Agents of Subversion’ by

    👁️ Intelligence History Reading Group: ‘The Mission: The CIA in the 21st Century’ by Tim Weiner (1st half)

    Iffy Books 404 S. 20th St., Philadelphia, United States

    Join us Wednesday, August 20th at 7 p.m. for a discussion on the first half of The Mission: The CIA in the 21st Century by Tim Weiner (2025). At the […]

  • Thu 21
    Photo of a printing block with an image of a bird/flame shape next to two test prints with black ink
    August 21 @ 5:30 pm - 8:30 pm

    🖼️ B̶l̶o̶c̶k̶ ̶P̶r̶i̶n̶t̶i̶n̶g̶ ̶W̶o̶r̶k̶s̶h̶o̶p̶ (postponed)

    Iffy Books 404 S. 20th St., Philadelphia, United States

    This workshop is postponed 'til September. Stay tuned for the new date! We apologize for the inconvenience. ̶J̶o̶i̶n̶ ̶u̶s̶ ̶o̶n̶ ̶T̶h̶u̶r̶s̶d̶a̶y̶,̶ ̶A̶u̶g̶u̶s̶t̶ ̶2̶1̶s̶t̶ ̶a̶n̶d̶ ̶l̶e̶a̶r̶n̶ ̶t̶h̶e̶ ̶b̶a̶s̶i̶c̶s̶ ̶o̶f̶ ̶b̶l̶o̶c̶k̶ ̶p̶r̶i̶n̶t̶i̶n̶g̶!̶ […]

  • Fri 22
    Animated GIF of a small circuit board with two blinking LED lights, two transistors, two capacitors, and four resistors
    August 22 @ 1:00 pm - 2:00 pm ⚡️ Beginner Soldering: Flashing LED Circuit

    ⚡️ Beginner Soldering: Flashing LED Circuit

    Iffy Books 404 S. 20th St., Philadelphia, United States

    In this workshop you'll learn the basics of soldering by building a tiny oscillator circuit with two transistors and two LED lights. No previous experience needed! Register: coming soon!  

  • Sat 23
    Photo of bookshelves with the following text overlaid: Saturday, August 23rd, 2025 The Philly Bookstore Crawl
    August 23 @ 10:00 am - 6:00 pm

    🐌 Philly Bookstore Crawl

    Iffy Books 404 S. 20th St., Philadelphia, United States

    The third annual Philly Bookstore Crawl is on Saturday, August 23rd. Can't wait to see y'all!

  • Tue 26
    Flyer with a green background and the following text: The Writing Room @ Iffy Books / Every Tuesday 5-7:30 PM / Come co-work with other writers in three 4-minute units of silent writing. Writers and projects of any type welcome. 10-minute breaks and accountability check-ins between units. BYO coffee, water, computer chargers, notepads, etc.
    August 26 @ 5:00 pm - 7:30 pm ✏️ The Writing Room

    ✏️ The Writing Room

    Iffy Books 404 S. 20th St., Philadelphia, United States

    Come co-work with other writers in three 40-minute units of silent writing. Writers and projects of any type welcome. 10-minute breaks and accountability check-ins between units. BYO coffee, water, computer […]

  • Wed 27
    A 1950s-era book cover for 'A Canticle for Leibowitz' by Walter M. Miller Jr., with an illustration of a man wearing a cross necklace, wringing his hands with a distressed look on his face
    August 27 @ 7:00 pm - 8:30 pm 🪐 Speculative Futures Reading Group

    🪐 Speculative Futures Reading Group: ‘A Canticle for Leibowitz’ by Walter M. Miller Jr.

    Iffy Books 404 S. 20th St., Philadelphia, United States

    The Speculative Futures Reading Group meets on the last Wednesday of every month at 7 p.m.!

  • Thu 28
    Photo of a DIY macro keyboard sitting next to a laptop: a block of oak wood with two mechanical keyboard switches mounted on top, connected to a Raspberry Pi Pico device on the rear side. The key caps are mint green and pastel orange.
    August 28 @ 2:30 pm - 4:30 pm ⌨️ DIY Macro Keyboard Workshop

    ⚙️ DIY Macro Keyboard Workshop

    Iffy Books 404 S. 20th St., Philadelphia, United States

    For this workshop you'll use a Pi Pico board and CircuitPython to create a programmable mechanical keyboard with two keys. No soldering experience necessary! To complete this project you'll need […]

  • Fri 29
    Zine cover for "Build a Solar-Powered Music Synth," with the Iffy Books logo in the lower left corner. In the middle of the page there's a black-and-white drawing of cute hamsters assembling electronic components on a breadboard. A spiral sun is overhead, with a curving arrow pointing at a pair of music notes.
    August 29 @ 12:00 pm - 1:00 pm ☀️ Solar Music Synth Workshop

    ☀️ Solar Music Synth Workshop

    Iffy Books 404 S. 20th St., Philadelphia, United States

    Join us and build a tiny solar-powered square wave generator on a breadboard. No soldering required! The workshop is free to attend, but you'll need to purchase a kit for […]

  • Fri 29
    Animated GIF of a small circuit board with two blinking LED lights, two transistors, two capacitors, and four resistors
    August 29 @ 1:00 pm - 2:00 pm ⚡️ Beginner Soldering: Flashing LED Circuit

    ⚡️ Beginner Soldering: Flashing LED Circuit

    Iffy Books 404 S. 20th St., Philadelphia, United States

    In this workshop you'll learn the basics of soldering by building a tiny oscillator circuit with two transistors and two LED lights. No previous experience needed! Register:  

  • Sat 30
    The Meshtastic logo, with the word "Meshtastic" in black
    August 30 @ 10:30 am - 12:00 pm 📡 Meshtastic 101

    📡 Meshtastic 101

    Iffy Books 404 S. 20th St., Philadelphia, United States

    Join us for an introduction to Meshtastic, an application that lets you send private text messages over the air using pocket-sized LoRa radio transceivers. We’ll show you how to flash the […]

  • September 2025
  • Tue 2
    Flyer with a green background and the following text: The Writing Room @ Iffy Books / Every Tuesday 5-7:30 PM / Come co-work with other writers in three 4-minute units of silent writing. Writers and projects of any type welcome. 10-minute breaks and accountability check-ins between units. BYO coffee, water, computer chargers, notepads, etc.
    September 2 @ 5:00 pm - 7:30 pm ✏️ The Writing Room

    ✏️ The Writing Room

    Iffy Books 404 S. 20th St., Philadelphia, United States

    Come co-work with other writers in three 40-minute units of silent writing. Writers and projects of any type welcome. 10-minute breaks and accountability check-ins between units. BYO coffee, water, computer […]

  • Thu 4
    Painting of workers and enormous machines in a Detroit auto plant, painted by Diego Rivera
    September 4 @ 7:00 pm - 9:00 pm 📚 Capital Reading Group

    📚 Capital Reading Group

    Iffy Books 404 S. 20th St., Philadelphia, United States

    Join us for a discussion on Marx's Capital by. We'll post the sections we're covering before each meeting. We're reading Paul Reitter's recent translation (Princeton University Press, 2024).

  • Fri 5
    Animated GIF of a small circuit board with two blinking LED lights, two transistors, two capacitors, and four resistors
    September 5 @ 5:30 pm - 6:30 pm ⚡️ Beginner Soldering: Flashing LED Circuit

    ⚡️ Beginner Soldering: Flashing LED Circuit

    Iffy Books 404 S. 20th St., Philadelphia, United States

    In this workshop you'll learn the basics of soldering by building a tiny oscillator circuit with two transistors and two LED lights. No previous experience needed! Register:  

  • Fri 5
    The words "Philly 2600" in an old-school digital font
    September 5 @ 6:00 pm - 8:00 pm 💻 Philly 2600 Meetup

    💻 Philly 2600 Meetup

    Iffy Books 404 S. 20th St., Philadelphia, United States

    > The Philly 2600 meeting is a monthly gathering of local hackers, phreaks, nerds, geeks, activists, tinkerers, developers, infosec professionals, and other interesting people.

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