I write books (simonmonk.org) about Arduino, Raspberry Pi, micro:bit and electronics. I also design products for @monkmakes

Joined January 2010
1,356 Photos and videos
I've been playing with Bluetooth Low Energy and ESP32 as a way to make a door lock. You can read about it here: doctormonk.com/2026/03/esp32…

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I've just released a second edition of Programming the ESP32. The main change is a new chapter on BLE. simonmonk.org/esp32_ed2
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Dr Simon Monk retweeted
25 May 2025
Ancient Rome’s precision: In 398 BC, Romans dug a 1.2 km tunnel from both ends and met perfectly. No modern tools, just brilliant planning. [🎞️ simple.history_]

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You can now buy Programming ESP32 direct from Ingram in the UK and US. shop.ingramspark.com/b/084?p…
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My book Programming Pico (2nd edition) is now available direct from Ingram Spark in the UK and US. shop.ingramspark.com/b/084?p…
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A bit of a diversion into Optometry for me. I've written a tool for measuring metamorphopsia -- from which I suffer in one eye. github.com/simonmonk/metamor… #optometry #eye
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My book Programming Pico (2nd edition) is now available direct from Ingram Spark in the UK and US. shop.ingramspark.com/b/084?p…
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You can now buy Programming ESP32 direct from Ingram in the UK and US. shop.ingramspark.com/b/084?p…
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Dr Simon Monk retweeted
22 Apr 2025
Our Solar Experiments's kit for micro:bit is a great way of learning about renewable energy. But it works best when there is some sun! monkmakes.com/mb_solar.html
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Dr Simon Monk retweeted
30 Apr 2025
The lovely people at Pimoroni are having a sale and our Illuminata is now 15% off! bit.ly/3EPo0TR Worth a look because its getting 5* reviews!
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Dr Simon Monk retweeted
We exercised our constitutional rights and so did the dog - extra walk because its sunny!! 😂 Have you used your vote today?
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I've just published part 3 of my Accessible Radio project blog post series. doctormonk.com/2025/05/tuesd…
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My book Programming Pico (2nd edition) is now available direct from Ingram Spark in the UK and US. shop.ingramspark.com/b/084?p…
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You can now buy Programming ESP32 direct from Ingram in the UK and US. shop.ingramspark.com/b/084?p…
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Dr Simon Monk retweeted
You can now buy our LED Arc from our friends at PiHut in the UK. Instructions, buy-links and datasheet here: monkmakes.com/led_arc.html Rings for use with @microbit_edu and pins for other boards.
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Dr Simon Monk retweeted
15 Apr 2025
We replaced our CO2 for micro:bit board, with two more compact (and lower cost) boards. monkmakes.com/co2_dock and monkmakes.com/co2_mini.html Choice of alligator leads or docking.
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I've just published part 2 of my blog series on making an accessible FM radio. This post concentrates on a PCB coil antenna. doctormonk.com/2025/04/acces…
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I've written a Python interface to this low-cost sprectrum analyser. github.com/simonmonk/rf_3000…
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Part 1 of a blog post out now, describing a work in progress, designing an accessible FM radio. blogger.com/blog/posts/54167… Key requirement - no eye stabbing antenna. I'm not going down the Internet Radio route.
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