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  • July 2025
  • Wed 9
    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.
    July 9 @ 10:00 am - 11:00 am ☀️ 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 […]

  • Wed 9
    Logo for the digital audio workstation software Reaper, with curving green, red, blue, and white shapes forming a guitar pick shape
    July 9 @ 11:15 am - 12:30 pm 🎤 Audio Editing with Reaper

    🎤 Audio Editing with Reaper

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

    Bring a laptop and learn the basics of audio editing! We'll start by making a recording of a poem as a group, passing the mic after each line. Then you'll […]

  • Wed 9
    A handmade audio sampler with a Pi Pico board, a 2x4 push button keypad, and a 3.5mm audio output jack
    July 9 @ 1:00 pm - 4:00 pm 🎶 Pico MP3 Sampler Workshop

    🎶 Pico MP3 Sampler Workshop

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

    Create your own digital audio sampler using a Pi Pico clone board! This project requires some soldering. It's recommended for folks who have soldered once or twice before, but beginners […]

  • Wed 9
    Cover of the book 'Who Owns This Sentence? A History of Copyrights and Wrongs' by David Bellos and Alexandre Montagu, with a circle-C copyright symbol modified with two dots to make a sideways smiley face, in black on a yellow background
    July 9 @ 6:30 pm - 8:30 pm ⚙️ Neo-Luddite Reading Group

    ⚙️ Neo-Luddite Reading Group: ‘Who Owns This Sentence? A History of Copyrights and Wrongs’ by David Bellos and Alexandre Montagu

    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 10
    Photo of a USB port with exposed terminals next to a USB plug, with black and red lines indicating wires connecting them. Next to the black wire is text reading "GND to GND," and next to the red wire is "VCC to VCC"
    July 10 @ 10:00 am - 11:00 am 🚫 USB Data Blocker Soldering Class

    🚫 USB Data Blocker Soldering Class

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

    Charging your phone in a public place can be stressful. What if someone is collecting your metadata for marketing purposes? What if they're copying your files or installing malware? A […]

  • Thu 10
    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.
    July 10 @ 11:15 am - 12:30 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 […]

  • Thu 10
    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 10 @ 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 11
    Photo of an ESP32-C3 Super Mini microcontroller, a quarter-sized circuit board with 16 pin holes along the edges
    July 11 @ 11:15 am - 12:30 pm 👻 Wi-Fi Tricks with Ghost ESP

    👻 Wi-Fi Tricks with Ghost ESP

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

    If you're interested in learning about wi-fi and Bluetooth networking but can't justify buying a Flipper Zero, this workshop is for you! Ghost ESP is a network analysis/testing tool that […]

  • Fri 11
    Flyer with a needlepoint-style image of a house with chimneys and the text "Host a Website at Home," followed by this list: ❏ register a domain ❏ install Armbian OS ❏ set up a firewall ❏ make a web page ❏ install & configure nginx HTTP server ❏ set up port forwarding & DDNS
    July 11 @ 1:00 pm - 4:00 pm 🏠 Host a Website at Home

    🏠 Host a Website at Home

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

    Join us for the workshop Host a Website at Home! You’ll learn to run a web server using nginx on a single-board computer, letting you host a website from your […]

  • Fri 11
    July 11 @ 4:00 pm - 5:30 pm 📶 LoRa Mods: Header Pins & Vibration Motors

    📶 LoRa Mods: Header Pins & Vibration Motors

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

    Stay tuned for details!

  • Fri 11
    The words "Philly 2600" in an old-school digital font
    July 11 @ 6:00 pm - 8:00 pm 💻 Philly 2600 Meetup

    💻 Philly 2600 Meetup

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

    This month we're meeting on Friday, July 11th from 6–8 p.m. Hope to see you! > The Philly 2600 meeting is a monthly gathering of local hackers, phreaks, nerds, geeks, […]

  • Sat 12
    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.
    July 12 @ 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 […]

  • Sat 12
    Flyer with green and pink rectangles on a pink background, a green book cover, and the following text: Iffy Books presents ... Fresh, Green Life by Sebastian Castillo book launch at Neon Clown Dream Lounge 1248 N. Front St., PHL opening readings by Josef Kaplan & John Paetsch debut performance of the one-act play “Why Even Read It?” by Sebastian Castillo starring Matt Zarenkiewicz, Molly Gorelick & David Sexton Saturday, July 12th Doors at 7 PM, show at 7:30
    July 12 @ 7:00 pm - 9:30 pm

    📗 ‘Fresh, Green Life’ book launch at Neon Clown Dream Lounge

    Neon Clown Dream Lounge 1248 N. Front St., Philadelphia, PA, United States

    This Saturday at Neon Clown Dream Lounge we're throwing a book launch for the novel 'Fresh, Green Life' by Philly author Sebastian Castillo (Soft Skull Press). Come out and get a […]

  • Tue 15
    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 15 @ 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 16
    A photo of an audio cassette tape, made of black plastic with a red label. The brand is BASF, and the text says "ferro super LH 90"
    July 16 @ 10:00 am - 11:00 am 🔁 Cassette Tape Loop Workshop

    🔁 Cassette Tape Loop Workshop

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

    Learn to make physical audio loops with used cassette tapes! No experience needed. For the workshop we’ll be using cassettes with screws in the corners, which are easier to take […]

  • Wed 16
    Photo of a servo motor (computer-controllable motor) with plastic gears inside a transparent blue plastic case
    July 16 @ 11:15 am - 12:30 pm 🎸 Thrash Bot Workshop

    🎸 Thrash Bot Workshop

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

    We’re making guitar-playing robots with Pi Pico microcontrollers and 360° servo motors! We'll provide soldering irons and supplies. To complete this workshop you'll need to buy a kit for $10. […]

  • Wed 16
    Logo for the digital audio workstation software Reaper, with curving green, red, blue, and white shapes forming a guitar pick shape
    July 16 @ 11:15 am - 12:30 pm 🎤 Audio Editing with Reaper

    🎤 Audio Editing with Reaper

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

    Bring a laptop and learn the basics of audio editing! We'll start by making a recording of a poem as a group, passing the mic after each line. Then you'll […]

  • Wed 16
    Animated GIF of a small printed circuit board with a row of four green LEDs and one red LED creating a bouncing audio level meter
    July 16 @ 1:00 pm - 4:00 pm 🔊 DIY Audio Meter Soldering Class

    🔊 DIY Audio Meter Soldering Class

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

    Join us for another beginner-friendly soldering project at Iffy Books! You'll assemble a DIY audio meter kit, which you can use to visualize an audio signal's amplitude. To complete this […]

  • Wed 16
    July 16 @ 7:00 pm - 8:30 pm 👁️ Intelligence History Reading Group: ‘Agents of Subversion’ by

    👁️ Intelligence History Reading Group: ‘Agents of Subversion’ by John P. Delury

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

    For the first installment of the Intelligence History Reading Group, we're reading Agents of Subversion: The Fate of the CIA's Covert War in China by John P. Delury (2022). We'll […]

  • Thu 17
    Flyer image with two 1/4" phone plugs, four lightning-shaped electricity icons, and the following text: Make a DIY Guitar Cable Beginner soldering class! Details & registration at iffybooks.net
    July 17 @ 10:00 am - 11:00 am 🎵 Guitar Cable Soldering Class

    🎵 Guitar Cable Soldering Class

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

    Join us for a relatively quick and easy soldering workshop, suitable for total beginners! You'll strip some wires and solder 1/4-inch plugs to the ends, creating your own guitar cable. […]

  • Thu 17
    July 17 @ 11:15 am - 12:30 pm 🎲 Pico Game Timer & Dice Workshop

    🎲 Pico Game Timer & Dice Workshop

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

    Learn 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. […]

  • Thu 17
    Animated GIF of a heart-shaped printed circuit board with red LEDs around the edge, slowly turning on and off
    July 17 @ 1:00 pm - 4:00 pm ❤️ LED Heart Soldering Class

    ❤️ LED Heart Soldering Class

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

    Come out and get some soldering practice! This time we're making a heart-shaped board with 22 LEDs, using an oscillator circuit to dim and brighten them at the speed you […]

  • Thu 17
    Old-fashioned website screen capture with a repeated picture of a cloud in the background: Welcome To The *Making Your First Website* Workshop Learn HTML and create a home page on Neocities! Total beginners welcome! Iffy Books / Ragman WARNING: this page is under construction
    July 17 @ 6:00 pm - 8:00 pm 💻 Make Your First Website

    💻 M̶a̶k̶e̶ ̶Y̶o̶u̶r̶ ̶F̶i̶r̶s̶t̶ ̶W̶e̶b̶s̶i̶t̶e̶ (postponed, sorry!)

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

    Tonight's workshop is canceled because the instructor isn't feeling well. We're sorry for the inconvenience! We'll reschedule and announce a new date soon. ̶M̶a̶k̶e̶ ̶a̶ ̶h̶o̶m̶e̶ ̶p̶a̶g̶e̶ ̶l̶i̶k̶e̶ ̶i̶t̶'̶s̶ ̶1̶9̶9̶9̶!̶ […]

  • Fri 18
    ESP32 microcontroller development board with a pink-blue circular gradient in the background
    July 18 @ 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 18
    Flyer with a needlepoint-style image of a house with chimneys and the text "Host a Website at Home," followed by this list: ❏ register a domain ❏ install Armbian OS ❏ set up a firewall ❏ make a web page ❏ install & configure nginx HTTP server ❏ set up port forwarding & DDNS
    July 18 @ 1:00 pm - 4:00 pm 🏠 Host a Website at Home

    🏠 H̶o̶s̶t̶ ̶a̶ ̶W̶e̶b̶s̶i̶t̶e̶ ̶a̶t̶ ̶H̶o̶m̶e̶ (canceled, sorry!)

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

    We had to cancel this workshop because a family obligation came up. Sorry for the inconvenience. We'll offer it again soon! ̶J̶o̶i̶n̶ ̶u̶s̶ ̶f̶o̶r̶ ̶t̶h̶e̶ ̶w̶o̶r̶k̶s̶h̶o̶p̶ ̶H̶o̶s̶t̶ ̶a̶ ̶W̶e̶b̶s̶i̶t̶e̶ ̶a̶t̶ […]

  • Sat 19
    The Meshtastic logo, with the word "Meshtastic" in black
    July 19 @ 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 […]

  • Tue 22
    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 22 @ 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 23
    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.
    July 23 @ 10:00 am - 11:00 am ☀️ 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 […]

  • Wed 23
    Logo for the digital audio workstation software Reaper, with curving green, red, blue, and white shapes forming a guitar pick shape
    July 23 @ 11:15 am - 12:30 pm 🎤 Audio Editing with Reaper

    🎤 Audio Editing with Reaper

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

    Bring a laptop and learn the basics of audio editing! We'll start by making a recording of a poem as a group, passing the mic after each line. Then you'll […]

  • Wed 23
    A handmade audio sampler with a Pi Pico board, a 2x4 push button keypad, and a 3.5mm audio output jack
    July 23 @ 1:00 pm - 4:00 pm 🎶 Pico MP3 Sampler Workshop

    🎶 Pico MP3 Sampler Workshop

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

    Create your own digital audio sampler using a Pi Pico clone board! This project requires some soldering. It's recommended for folks who have soldered once or twice before, but beginners […]

  • Wed 23
    The symbol of the permacomputing movement, a pixel art flower 7 pixels wide and 9 pixels tall, in white on a black background.
    July 23 @ 6:30 pm - 8:00 pm 💾☀️ Permacomputing + Solarpunk Meetup

    💾☀️ Permacomputing + Solarpunk Meetup

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

    The Permacomputing + Solarpunk meetup is every other third Wednesday at Iffy Books! You can join us in person (404 S. 20th St., PHL) or remotely via Jitsi Meet. ➡️ […]

  • Thu 24
    Photo of a USB port with exposed terminals next to a USB plug, with black and red lines indicating wires connecting them. Next to the black wire is text reading "GND to GND," and next to the red wire is "VCC to VCC"
    July 24 @ 10:00 am - 11:00 am 🚫 USB Data Blocker Soldering Class

    🚫 USB Data Blocker Soldering Class

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

    Charging your phone in a public place can be stressful. What if someone is collecting your metadata for marketing purposes? What if they're copying your files or installing malware? A […]

  • Thu 24
    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.
    July 24 @ 11:15 am - 12:30 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 […]

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