From 39b7beab1288e94c185d1201e82e1df2cb30e573 Mon Sep 17 00:00:00 2001 From: then Date: Wed, 4 Nov 2020 23:43:25 +0100 Subject: [PATCH] typos --- electronics/README.md | 16 ++++++++-------- 1 file changed, 8 insertions(+), 8 deletions(-) diff --git a/electronics/README.md b/electronics/README.md index ab183e0..7ba7b42 100644 --- a/electronics/README.md +++ b/electronics/README.md @@ -11,18 +11,18 @@ * PCB: Send the gerbers from this repo to your fab of choice. * ESP12F: Widely available. * AM1117 3.3v Regulator: Widely available. -* QI compatible wireless charging coil delivering 5v and > [500 mA](https://docs.ai-thinker.com/_media/esp8266/docs/esp-12f_product_specification_en.pdf): For example [this](https://aliexpress.com/item/4001154059743.html), search keywords: "pcba receiver module qi". Alternatively you could repurpose coils advertised to convert non-QI phones to wireless charging, such as [these](https://www.pearl.de/mtrkw-9811-qi-kompatible-receiver-pads.shtml)*. +* QI compatible wireless charging coil delivering 5v and > [500 mA](https://docs.ai-thinker.com/_media/esp8266/docs/esp-12f_product_specification_en.pdf): For example [this](https://aliexpress.com/item/4001154059743.html), search keywords: "pcba receiver module qi". Alternatively you could repurpose 'adaptor coils' advertised to convert non-QI phones to wireless charging, such as [these](https://www.pearl.de/mtrkw-9811-qi-kompatible-receiver-pads.shtml)*. -* **NOTE**: Be aware that these 'converter pads' could contain additional circuitry that condition the output for use with specific mobile phones (the pearl.de ones do). Below is a guide to modify the 'pearl' coils to deliver maximum voltage (5v)constantly, instead of switching to low power, 2.5v output when not enough/too much current is drawn. +**NOTE**: Be aware that these 'adaptor coils' could contain additional circuitry that condition the output for use with specific mobile phones (the pearl.de ones do). Below is a guide to modify the 'pearl' coils to deliver maximum voltage (5v)constantly, instead of switching to low power, 2.5v output when not enough/too much current is drawn. -### Modding Coils/pads +### Modding 'adaptor coils' -If you have soldered all components together and your ESP12f won't boot, you might have to modifiy your charging coil+circuit a bit. To make sure it's the coil, measure the output of the coil's electronics on the + and - (gnd) terminals. If your multimeter reads ~2.5 volts you need to modify the circuit. (Disclaimer: the exact details on how this circuit works are yet unclear, comparing to a working coil revealed several differences in the electronics, matching them up made the non working coil output the needed 5v). +If you have soldered all components together and your ESP12f won't boot, you might have to modify your charging coil+circuit a bit. To make sure it's the coil, measure the output of the coil's electronics on the + and - (GND) terminals. If your multimeter reads ~2.5 volts you need to modify the circuit. (Disclaimer: the exact details on how this circuit works are yet unclear, comparing to a working coil revealed several differences in the electronics, matching them up made the non working coil output the needed 5v). ##### Step 1 -You need to desolder two IC's/ chips following the (visual) guide below. The electronics and coil are sandwitched between two layers of foil. To peel the foil away look for an opening near the lightning connector. +You need to desolder two IC's/ chips following the (visual) guide below. The electronics and coil are sandwiched between two layers of foil. To peel the foil away look for an opening near the lightning connector. ![picture](https://git.vvvvvvaria.org/then/opencoil-paracity/raw/branch/master/electronics/coil-mod/001-coil.jpg) @@ -33,14 +33,14 @@ You are then left over with the bare coil and flexible pcb. Here I already desol ![picture](https://git.vvvvvvaria.org/then/opencoil-paracity/raw/branch/master/electronics/coil-mod/003-bare-coil.jpg) -Remove the follwing chips indicated by the following silkscreen printing: +Remove the following chips indicated by the following silkscreen printing: * Q3 (chip markings: p7) * Q4 (chip markings: wsc7) ![picture](https://git.vvvvvvaria.org/then/opencoil-paracity/raw/branch/master/electronics/coil-mod/004-q3.jpg) ![picture](https://git.vvvvvvaria.org/then/opencoil-paracity/raw/branch/master/electronics/coil-mod/005-q4.jpg) -A hot air reworking station + tweezers will make quick work of that (settings: 1 second on 320deg, modertate airflow). Without hotair you could try a soldering iron or fine wirecutters to simply cut away the chips. The flexible PCB is very fragile though. +A hot air reworking station + tweezers will make quick work of that (settings: 1 second on 320deg, moderate airflow). Without hot-air you could try a soldering iron or fine wire-cutters to simply cut away the chips. The flexible PCB is very fragile though. ![picture](https://git.vvvvvvaria.org/then/opencoil-paracity/raw/branch/master/electronics/coil-mod/006-hotair.jpg) @@ -50,7 +50,7 @@ Step 1 completed! ##### Step 2 -With both chips removed, you have to bridge two of the three (now) bare connections of the transitor Q4. I could not find a datasheet on this transitor so please refer to the photo's to see which pins. +With both chips removed, you have to bridge two of the three (now) bare connections of the transistor Q4. I could not find a datasheet on this transistor so please refer to the photo's to see which pins. ![picture](https://git.vvvvvvaria.org/then/opencoil-paracity/raw/branch/master/electronics/coil-mod/008-bridge.jpg)