# Musa PCB ruler A silly PCB ruler in the shape and size of a banana with extra features - **Seller:** [Ping Hobbyelektronik](https://lectronz.com/stores/ping-el), Ålem, Kalmar län, Sweden - **Price:** €3.00 (EUR, before shipping and taxes) - **Availability:** Sold out - **Categories:** Tools, Accessories - **Product page:** https://lectronz.com/products/musa-pcb-ruler ## Options **Coating** - Bare for soldering to - Laquered for safe handling ## Links - [Design Files](https://github.com/rallekralle11/Musa) ## Images ![Musa PCB ruler](https://lectronz-images.b-cdn.net/lectronz/active_storage/representations/proxy/eyJfcmFpbHMiOnsiZGF0YSI6MTYxMTEsInB1ciI6ImJsb2JfaWQifX0=--0abfca2b8cccd3c2e0b4e3369b1a6b567fd74259/eyJfcmFpbHMiOnsiZGF0YSI6eyJmb3JtYXQiOiJqcGciLCJyZXNpemVfdG9fbGltaXQiOls5NjAsNjQwXSwic2F2ZXIiOnsic3RyaXAiOnRydWV9fSwicHVyIjoidmFyaWF0aW9uIn19--970c165836a83091725a1a0fd4f37ce9408da1bf/2024-09-19-18-14-07-959.jpg) ![Musa PCB ruler](https://lectronz-images.b-cdn.net/lectronz/active_storage/representations/proxy/eyJfcmFpbHMiOnsiZGF0YSI6MTYxMTUsInB1ciI6ImJsb2JfaWQifX0=--1cb701a22b73d6e8cb785d29d5d2f1acd98fe482/eyJfcmFpbHMiOnsiZGF0YSI6eyJmb3JtYXQiOiJqcGciLCJyZXNpemVfdG9fbGltaXQiOls5NjAsNjQwXSwic2F2ZXIiOnsic3RyaXAiOnRydWV9fSwicHVyIjoidmFyaWF0aW9uIn19--970c165836a83091725a1a0fd4f37ce9408da1bf/2024-09-19-18-36-26-935.jpg) ![Musa PCB ruler](https://lectronz-images.b-cdn.net/lectronz/active_storage/representations/proxy/eyJfcmFpbHMiOnsiZGF0YSI6MTU5MjQsInB1ciI6ImJsb2JfaWQifX0=--4982e081ad19827b1379081b3f59156ba5cd975e/eyJfcmFpbHMiOnsiZGF0YSI6eyJmb3JtYXQiOiJwbmciLCJyZXNpemVfdG9fbGltaXQiOls5NjAsNjQwXSwic2F2ZXIiOnsic3RyaXAiOnRydWV9fSwicHVyIjoidmFyaWF0aW9uIn19--605f1da017bcbb03ce31845cd0e81d97e3b3c574/musa_f.png) ![Musa PCB ruler](https://lectronz-images.b-cdn.net/lectronz/active_storage/representations/proxy/eyJfcmFpbHMiOnsiZGF0YSI6MTU5MjgsInB1ciI6ImJsb2JfaWQifX0=--21471847c79c081867e6cbc7c11860ad2c82dc59/eyJfcmFpbHMiOnsiZGF0YSI6eyJmb3JtYXQiOiJwbmciLCJyZXNpemVfdG9fbGltaXQiOls5NjAsNjQwXSwic2F2ZXIiOnsic3RyaXAiOnRydWV9fSwicHVyIjoidmFyaWF0aW9uIn19--605f1da017bcbb03ce31845cd0e81d97e3b3c574/musa_b.png) ## Description It may not be the most useful for measuring things accurately, but everyone needs a banana for scale once in a while. And this banana is more than it seems. Many of the reference footprints on it are connected more or less correctly to power and to other footprints. The board can, depending on what's soldered to it, act as the following: * a 555 blinker * 3,3V power source fed by USB or other input * ATMega328 dev board * ATMega1280 dev board * ESP32-C3 dev board * ESP32-S3 or S2 dev board With that said, it will never be "good" at any of the functions. It was never designed to be. It's just a fun thing. Other footprints the MCUs can access: * up to 3 neopixels * 2 power LEDs with transistor * 2 basic LEDs * 4 switches, 2 of which are for reset/boot mode * the USB port * 7 IO pads, 4 of which are also available on the edge for use with crocodile clips It may not be the most useful for measuring things accurately, but everyone needs a banana for scale once in a while. And this banana is more than it seems. Many of the reference footprints on it are connected more or less correctly to power and to other footprints. The board can, depending on what's soldered to it, act as the following: a 555 blinker 3,3V power source fed by USB or other input ATMega328 dev board ATMega1280 dev board ESP32-C3 dev board ESP32-S3 or S2 dev board With that said, it will never be "good" at any of the functions. It was never designed to be. It's just a fun thing. Other footprints the MCUs can access: up to 3 neopixels 2 power LEDs with transistor 2 basic LEDs the 555 blinker output 4 switches, 2 of which are for reset/boot mode the USB port 7 IO pads, 4 of which are also available on the edge for use with crocodile clips The USB port needs a sheet of plastic or something glued to the back for use as the board is a bit too thin. Sooner or later i'll write a guide on what to solder where to make it work. ## Shipping policy Shipping within a week or so. Lately shipments to the US have been taking up to several months so be aware of that.