Swaying Camping Shima Rin Nendoroid Campfire Lamp

The cover is another two-spined salamander trap.

1 Introduction

The thing is like this. At the beginning of 2021, I saw that GSC’s Shima Rin Nendoroid figure was reprinted on HPoi, so I quickly went to the HPoi official store to place an order, and received a repayment notice last month (October), and then I saw a comment on a certain website saying where this bonfire lamp came from, so I was curious and searched on Baidu. I found out that this bonfire lamp is a special item from the GSC Taobao official store. Woc, I didn’t know. I will buy it from the GSC official store in the future. Forget it, but this lamp is still almost 100 more expensive, and there are a lot of family heirlooms on a certain fish. Okay, raise the price, right? I’ll make one myself!

2. Introduction

Designed to replace GSC981-DX, the special campfire LED light of Shima Rin DX version, it uses ATMEGA13A-SU as the main control, built-in LTC4054 lithium battery charging circuit, supports 60 mAh battery, type-c charging port, and self-locking circuit.

3.Self-locking circuit

Although this thing is also sold on a certain fish store, it is a magnetic induction type. The one I made is a push-button type, which is easier to make. The principle is: when the button is pressed, Q2 is turned on through the D1 diode, and then Q1 is turned on, and the battery power is connected to the MCU. Then the first thing after the MCU starts is to pull Q2 from D2 and hold it, so after letting go The MCU can also power itself, which is equivalent to a self-locking circuit. In the end, the MCU only needs to give a low level and it will turn off the power.

4.Charging circuit

It’s a relatively simple charging circuit, there’s not much to say. The red light will turn on when charging, and it will turn off when it is fully charged.

5. Flame effect

See video effect.

There are 9 effects in 3 categories.

The first three are to simulate the flickering effect of a campfire, and the three flickering frequencies are different.

The middle three are fixed brightness and always on, which are 1/4, 1/2, and 1 brightness respectively.

The latter three are breathing light effects, the difference is the duration.

6. Summary

A relatively simple project.

There is no download interface reserved. It is recommended to use a burning folder to burn the program!

Battery recommendation: 15mmx12mmx4mm

Recommended plate thickness: 0.8mm

The code will be uploaded this weekend

Shell ready to be painted